We can Tweet in 280 characters. Should we?

A new update on Twitter allows you to tweet double the original 140-character limit, leaving more room to share hashtags, links, photos, and commentary. Yet, is there a compelling reason to add more words?

As Mark Twain said, “I didn’t have time to write a short letter, so I wrote a long one instead.” Now, will it be: “I didn’t have to write a short tweet, so I wrote a long one instead,”?